Prosecutor again accuses South African sports star of lying.

JOHANNESBURG—The prosecutor in the murder trial of Oscar Pistorius questioned the South African star for a final time on Tuesday, homing in on alleged inconsistencies in the South African runner's testimony as he sought again to discredit the athlete's claims of his innocence in the shooting death of his girlfriend.

Cross-examining Mr. Pistorius for a fifth day, prosecutor Gerrie Nel accused him of providing an implausible and untrue...